It is roughly 50 additional horsepower and more importantly, torque. The extra torque will make the car feel a bit lighter on its feet and provide that extra shove back in the seat when you put your foot in it. As a result, you will shave about .5 sec off your 0-60mph and 1/4 mi times.
The benefit of all this really just depends on how you drive and how much you value acceleration performance. Some folks that are used to modifying cars will see this as an incredible value. A couple clicks in an app and magically you are faster with full warranty in tact. An upgraded exhaust on a performance car alone could cost over $2k, headers, mufflers, high flows cats, etc. and not yield anywhere near 50hp/tq. You also don’t have to bust up your knuckles or pay and arm and a leg to install the new parts.
We could have a similar discussion about the performance value of the 3P+ Michelin PS4 tires vs. the eco 18s and continentals on the 19s. We could look at how much more lateral grip you get from the PS4s (.95g vs .84g) and how the 70-0mph braking is reduced from 176ft to 147ft but this only matters if you value improved cornering and braking. New tires will cost $1200-1400.
If you are someone that purchased an AWD but in the back of your mind you always kind of wished you had the 3P acceleration then this is an opportunity cut the acceleration delta between the AWD and 3P in half.
